Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

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MnStatusDetails
261137873Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
657641640724294540738392375.82024-02-05 04:36:07
History
DateUserTypeResult
2024-02-05Ruslan BorisovF
Factor: 65764164072429454073839 / TF: 75-76
2024-02-05Ruslan BorisovNF
no factor from 2^74 to 2^75
2022-02-21SRBaseNF
no factor from 2^73 to 2^74
2020-11-26SRBaseNF
no factor from 2^72 to 2^73
2020-07-04SRBaseNF
no factor from 2^71 to 2^72
2020-05-03SRBaseNF
no factor from 2^70 to 2^71
2019-05-12Chabot PrimeNF
no factor from 2^69 to 2^70
2018-06-21Chabot PrimeNF
no factor from 2^68 to 2^69
2016-07-21XZTNF
no factor from 2^67 to 2^68
2015-12-22brainboostNF
no factor from 2^66 to 2^67
2014-05-23Mr-PlonkNF
no factor from 2^65 to 2^66
2011-08-13RichardNF
no factor from 2^64 to 2^65
2010-03-14sasaki3NF
no factor from 2^63 to 2^64
2010-03-14sasaki3NF
no factor from 2^62 to 2^63